notNull = function(form) {	
	if (form.nome.value.length == 0 )
	{
		if (!(alert("All fields are mandatory!\n\nPlease fill in the field 'Name'!")))
		{
			form.nome.focus();
			return false;			
		}
	}
	
	if (form.cidade.value.length == 0 )
	{
		if (!(alert("All fields are mandatory!\n\nPlease fill in the field 'Country'!")))
		{
			form.cidade.focus();
			return false;			
		}			
	}	
	if (document.form.pais.selectedIndex==0)
	{
		if (!(alert("All fields are mandatory!\n\nPlease fill in the field 'City'!")))
		{
			form.pais.focus();
			return false;			
		}	
	}
	
	if (form.email.value.length == 0 )
	{
		if (!(alert("All fields are mandatory!\n\nPlease fill in the field 'E-mail'!")))
		{
			form.email.focus();
			return false;			
		}	
	}
	if (form.mensagem.value.length == 0 )
	{
		if (!(alert("All fields are mandatory!\n\nPlease fill in the field 'Message'!")))
		{
			form.mensagem.focus();
			return false;			
		}	
	}		
}